Waves

* Wavelength (λ): Measured in units of length, such as meters (m), centimeters (cm), or nanometers (nm).

* Frequency (f): Measured in Hertz (Hz), which represents cycles per second.

* Period (T): Measured in seconds (s), representing the time for one complete wave cycle.

Velocity

* Velocity (v): Measured in units of distance per unit time, such as meters per second (m/s), kilometers per hour (km/h), or miles per hour (mph).

Relationship

The speed of a wave is directly related to its wavelength and frequency:

* Velocity (v) = Wavelength (λ) × Frequency (f)

Important Note: While the units for wavelength and frequency are distinct, the unit for velocity combines them. For example, if the wavelength is in meters (m) and the frequency is in Hertz (Hz), then the velocity will be in meters per second (m/s).